Sugar-evaporating pan



(NoMbdeL) G. G. ALFRED. SUGAR EVAPORATING PAN.

No. 489,622. v Patented Jan. 10, 1893.

UNITED STATES PATENT OFFICE.

OHAUNCEY O. ALFRED, OF FAIRFAX, VERMONT.

SUGAR-EVAPORATING PAN.

SPECIFICATION forming part of Letters Patent No. 489,622, dated January10, 1893.

Application filed March 14, 1892. Serial No. 424,843. (No model.)

To aZZ whom it may concern:

Be it known that I, OHAUNCEY C. ALFRED, a citizen of the United States,residing at Fairfax, in the county of Franklin and State of 5 Vermont,have invented certain new and useful Improvements in Arches forSugar-Making and other Purposes; and I do hereby declare the followingto be a full, clear, and exact description of the invention, such aswill :0 enable others skilled in the art to which it appertains to makeand use the same.

My invention relates to improvements in arches for supportingevaporating pans, and which is intended asan improvement upon LettersPatent No. 302,699 granted to me July 29, 1884, and it consists in theparticular construction which will be fully described hereinafter andparticularly pointed out in the claims.

The object of my invention is first to stiffen and render more firm andstable the supports for the arch; second to more completely concentrateall of the heat in the arch to the under side of the pan which restsupon it; third to construct the upper end of the arch to facilitate theapplication of intervening depending aprons to direct and concentratethe heat to the under surface of the pan and to prevent the escape ofheat from the sides of the pan into the room, and against the operatorwhich makes the arch more comfortable to work around.

The accompanying drawing represents a perspective view of an arch whichembodies my invention complete.

A indicates the arch, at the bottom of which is a fire box D, the sidesof the arch from the upper portion of this fire box extending upwardlyand outwardly to cover and direct the heat radiated by the fire box tothe entire under surface of the pan N placed upon the top of the arch.The outwardly flaring sides 61 are bent in a vertical direction at theirupper ends as shown atf, to allow the metal ring or band e, to projectbeyond the said vertical portion, for a purpose to be presently setforth. The arch supports or legs B have theirupper ends extended alongthe vertical portions f of the arch A, and their upper ends securedrigidly to the projecting ends of the band a. These vertical portions falso form upright surfaces substantially parallel with the verticalportions of the legs 13 from which surfaces f are hung the aprons orplates E. The aprons can be detachably secured to the legs, or can havetheir upper ends secured to the faces f as desired. The purpose of theseaprons is to prevent the radiation of heat from the outwardly inclinedwalls 01 of the arch into the room and against the operator, and also todirect and guide the heat upward to the upper end of the arch, thusincreasing the heat at the evaporating pan. Owing to the use of theseaprons, it is made very comfortable for the operator, as the heat doesnot escape against him, as it otherwise does. So also these apronsstrengthen and make more firm and stable the legs B, which for the samepurpose are slightly concaved from the surfaces f downward to the flooras shown. From their lower ends the legs B extend upward and inward andare secured to the under side of the arch as illustrated. By thisconstruction the heat which would otherwise radiate so rapidly from thesides of the arch to the great discomfort of the operator, is directedupward to the pan, thereby greatly economizing in fuel, increasing theheat action, and adding much to the convenience and comfort of theoperator or persons about the arch. At the same time the metallicsupports of the arch are made more stable and reliable.

Having thus described my invention, What I claim and desire to secure byLetters Patent is:

1. An evaporating arch having a fire box at its lower end, upwardly andoutwardly inclined walls from the fire box upward, supports extendingfrom the upper end of the arch down below the fire box and then upwardand inward thereto, and depending plates secured to the supports andintersecting or joining the upper end of the said inclined walls,substantially as and for the purpose specified.

2. An evaporating arch having a fire box at its lower end, upwardly andoutwardly inclined walls projecting from the fire box, the upper end ofthe inclined walls being made straight or vertical, supports extendingdownward from these vertical portions below the said fire box and upwardand inward thereto, and depending plates or aprons extending from thesevertical portions of the walls downward and secured to the supports,substantially as set forth.

3. An evaporating pan having a fire box at its lower end, inclined wallsextending upwardly therefrom having vertical upperends, a band or ringprojecting beyond the said vertical walls, supports having their upperends extending along the said Vertical walls and secured to theprojecting ring, the supports extending below the fire box and upwardand inward thereto, substantially as described.

4. An evaporating arch having a fire box at its lower end, outwardly andupwardly inclined walls projecting from the fire box, the upper end ofthe inclined walls bent verti- OHAUNOEY C. ALFRED. Witnesses:

GILBERT A. Dow, WILLIAM E. WELLER.

